"Marxist theoreticians have heard too much, in season and out of season, about 'the crisis of Marxism' to be unduly moved by the latest anti-Marxist challenge, particularly as it coincided, oddly enough, with the practical confirmation of the essential theses of Karl Marx in the economic crash of 1929-36. In writing this book it was certainly not our intention to rebut the old stale arguments once again with old and equally stale answers. The same well-worn gramophone record has given satisfaction since the end of the last century."

“The world crisis which began in 1929, the longest ever known, caused people entirely unconnected with and even hostile to the working-class movement to speak of 'crisis' and even of the 'collapse of capitalism'. The economic and financial smash of 1929 ruthlessly disposed of the illusion that capitalism was about to experience an era of lasting prosperity and harmony. Liberalism observed with horror that the actual course of ignored all its good advice. Today the doctrine of liberalism is practically dead, but, at least, its few remaining defenders can console themselves by noting the disastrous effects of.”

“The dictatorships, whether Fascist or Bolshevist, have been able to conceal their innumerable defeats only by ruthlessly using both the gag and the lie.”

“For almost a quarter of a century the affairs of the world and its ideas have been in indescribable confusion. In most cases the confusion of ideas is manifest without the aid of polemic or controversy. It is simple evidence of the chaotic state of the world.”

“The real crisis through which Marxism is passing is not due to this relaxation of intellectual discipline on the part of some of those who call themselves followers of Marx. Unfortunately, the habit of praising or blaming without knowledge of the subject is becoming increasingly common to men of all parties today. This is not due to the failure of this or that doctrine, but to the crisis through which our whole civilisation is passing. At the same time this regrettable tendency adds greatly to the confusion in which all the sociological disputes of our day are taking place.”

“Bolshevism, which once aspired to supplant tottering capitalism, is now in a state of incurable degeneration both at home in Russia and internationally.”

“Let us define what we mean by Marxism. Is it the doctrine of Marx and Engels? Or is it the movements to which that doctrine has given birth, and which, rightly or wrongly, claim to be Marxist? To what extent are these movements actually inspired by Marxism, and to what extent have they caused it to develop, sometimes reforming, sometimes deforming it? Are these movements still really Marxist in the classic sense? Or do perhaps both friends and enemies of Marxism often harbour a distorted conception of Marx’s original theories? We must therefore ask ourselves whether the so-called crisis of Marxism is not in large measure a crisis of differing posthumous interpretations of Marxism. Karl Marx died in 1883 and Friedrich Engels in 1895. Although a number of their followers have developed their doctrines and provided important supplementary analyses of the modifications experienced by capitalism in the course of the twentieth century, the results of these labours have hardly affected the movement as a whole. In fact, as the movement grew in size, the assimilation even of the ideas of Marx and Engels themselves, which were naturally better known, became slower, more fragmentary and more superficial. In accordance with historical conditions which obviously differed considerably as between country and country, each movement took what best suited it from the original doctrine, and applied its choice to its own particular situation.”